I agree with the previous reviewer. I wear medium in most things, but this thing is very snug at the hips, and I'm pretty much maxed out at the velcro straps. I highly recommend sizing up based on waist size.
I have a short (29 inch) inseam, and I would prefer to own a full-zip eVent fabric pant for mountaineering. There are limited short-inseam options for breathable waterproof full-zip pants. It's the Precip for me. Doesn't breathe as well as the new offerings, but it's light, affordable, and gets the job done.